Test device and method for determining a component in a sample

In a test device for determining a component in a sample, wherein a carrier matrix is incorporated with a reactant system comprising at least one ingredient, said reactant system being capable of producing a detectable response upon contact with said sample component,

• the improvement in which said matrix is a cloth comprising a plurality of filaments at least an effective number of which having been incorporated with at least one ingredient of said reactant system prior to formation of said cloth.

A test device for determining a component in a test sample wherein a carrier matrix is incorporated with a reactant system which interacts with said component to produce a detectable response, the matrix comprising first and second pluralities of knitted filaments, at least an effective number of said first plurality being the only filaments in the matrix incorporated with at least one ingredient of said reactant system.

In a method for preparing a test device for determining the presence of a component in a sample wherein a cloth carrier matrix is incorporated with a reactant system capable of interacting with said component to produce a detectable response, the improvement which comprises

• incorporating at least one ingredient of said reactant system with at least one first filament, and
• forming a cloth matrix comprising said first filament and a plurality of second filaments.

A method for preparing a test device for determining the presence of a component in a sample wherein a cloth carrier matrix is incorporated with a reactant system capable of interacting with said component to produce a detectable response, said method comprising

• incorporating at least one ingredient of said reactant system with a plurality of first filaments,
• incorporating remaining ingredients of said reactant system with a plurality of second filaments, and
• forming a cloth matrix from said first and second filaments.